The Seiko 1E20-5209 is a watch model based on the 1E20 movement.
Parts List
| ESDN08GM | crystal |
| ESDN08GM01 | crystal - crystal (inorganic) |
| 30M68NA1 | crown - crown |
| 0H1200N01 | case back gasket |
| 0H1200N0 | case back gasket |
| DZ0041B0 | case back gasket |
| B5248G | band - metal band |
| B5248G-LKG | band - link |
| B5248G-PB1 | clasp - parts for buckle/clasp |
| B5248G-BK4G | clasp - clasp |
| 2CA035A0BDG | hand - minute hand |
| B080AS | others - push pin |
| 82723480 | others - case ring |
| 1E200420XG14 | others - dial |
| 1E20520925 | others - case |
| 1E208 | others - machine code |
| 03V06NGH | others - hour hand |
| 0351931 | others - winding stem |
| 03V06DGM | others - minute hand |
| 0354930 | others - winding stem |
| DZ0041B01 | others - crown and stem gasket |
Caliber 1E20
